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Supports left and right justification and left and right text flows. The ellipsis uses the U+2026 character or 3 dots if the font does not have U+2026. Localizers can override the text used. Unsupported: - Simple, non-shaped text - Non-axis aligned clip rects. - Center justified text #rb jamie.dale #preflight 0f59f9a92cf890001166d15 [CL 16898534 by Matt Kuhlenschmidt in ue5-main branch]
46 lines
2.2 KiB
C++
46 lines
2.2 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Framework/Text/SlateTextHighlightRunRenderer.h"
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#include "Rendering/DrawElements.h"
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#include "Styling/SlateTypes.h"
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FSlateTextHighlightRunRenderer::FSlateTextHighlightRunRenderer()
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{
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}
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int32 FSlateTextHighlightRunRenderer::OnPaint( const FPaintArgs& Args, const FTextLayout::FLineView& Line, const TSharedRef< ISlateRun >& Run, const TSharedRef< ILayoutBlock >& Block, const FTextBlockStyle& DefaultStyle, const FGeometry& AllottedGeometry, const FSlateRect& MyCullingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled ) const
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{
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FVector2D Location( Block->GetLocationOffset() );
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Location.Y = Line.Offset.Y;
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// The block size and offset values are pre-scaled, so we need to account for that when converting the block offsets into paint geometry
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const float InverseScale = Inverse(AllottedGeometry.Scale);
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// Draw the actual highlight rectangle
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FSlateDrawElement::MakeBox(
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OutDrawElements,
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++LayerId,
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AllottedGeometry.ToPaintGeometry(TransformVector(InverseScale, FVector2D(Block->GetSize().X, Line.Size.Y)), FSlateLayoutTransform(TransformPoint(InverseScale, Location))),
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&DefaultStyle.HighlightShape,
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bParentEnabled ? ESlateDrawEffect::None : ESlateDrawEffect::DisabledEffect,
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InWidgetStyle.GetColorAndOpacityTint() * DefaultStyle.HighlightShape.TintColor.GetColor(InWidgetStyle)
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);
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FLinearColor InvertedHighlightColor = DefaultStyle.HighlightColor.GetColor(InWidgetStyle);
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InvertedHighlightColor.A = InWidgetStyle.GetForegroundColor().A;
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FWidgetStyle WidgetStyle( InWidgetStyle );
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WidgetStyle.SetForegroundColor( InvertedHighlightColor );
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// When highlighting text we want the actual text so do not replace any of it with ellipsis
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const ETextOverflowPolicy OverflowPolicy = ETextOverflowPolicy::Clip;
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return Run->OnPaint( Args, FTextArgs(Line, Block, DefaultStyle, OverflowPolicy, ETextOverflowDirection::NoOverflow), AllottedGeometry, MyCullingRect, OutDrawElements, LayerId, WidgetStyle, bParentEnabled );
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}
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TSharedRef< FSlateTextHighlightRunRenderer > FSlateTextHighlightRunRenderer::Create()
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{
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return MakeShareable( new FSlateTextHighlightRunRenderer() );
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}
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